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EN 1.4640 Stainless Steel vs. EN 1.4807 Stainless Steel

Both EN 1.4640 stainless steel and EN 1.4807 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4640 stainless steel and the bottom bar is EN 1.4807 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 200
140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 51
4.5
Fatigue Strength, MPa 230 to 250
120
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
75
Tensile Strength: Ultimate (UTS), MPa 620 to 650
480
Tensile Strength: Yield (Proof), MPa 240 to 260
250

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Corrosion, °C 420
600
Maximum Temperature: Mechanical, °C 930
1000
Melting Completion (Liquidus), °C 1420
1390
Melting Onset (Solidus), °C 1380
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 14
39
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.8
6.8
Embodied Energy, MJ/kg 40
97
Embodied Water, L/kg 150
190

Common Calculations

PREN (Pitting Resistance) 20
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250 to 260
18
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 170
160
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22 to 23
17
Strength to Weight: Bending, points 21
17
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 14 to 15
12

Alloy Composition

Carbon (C), % 0.030 to 0.080
0.3 to 0.5
Chromium (Cr), % 18 to 19
17 to 20
Copper (Cu), % 1.3 to 2.0
0
Iron (Fe), % 67.4 to 73.6
36.6 to 46.7
Manganese (Mn), % 1.5 to 4.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 5.5 to 6.9
34 to 36
Niobium (Nb), % 0
1.0 to 1.8
Nitrogen (N), % 0.030 to 0.11
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.5
1.0 to 2.5
Sulfur (S), % 0 to 0.015
0 to 0.030